| Views | |
| Lateral and subjacent support | 391 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| Lateral and subjacent support | 32 | 46 | 28 | 23 | 12 | 26 | 24 |
| Views | |
| boyd_lateral_2009.pdf | 315 |
| Views | |
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